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CVE-2016-8638
critical
CVSS 9.1
Vulnerability in ipsilon (CVE-2016-8638)
Summary
vulnerability in ipsilon (CVE-2016-8638). Confidential information can be exposed externally. Mitigation: upgrade to `1.0.3, 1.1.2, 2.0.2, 1.2.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2016-8638** has been found in ipsilon.
Confidential information can be exposed externally. CVSS score: 9.1/10.
What to do: upgrade ipsilon to **1.0.3, 1.1.2, 2.0.2, 1.2.1** or later.
If unsure, ask your IT team or search "ipsilon CVE-2016-8638" on the vendor's site.
CVE-2016-8638 (ipsilon) — CWE-384 / CVSS v3 9.1
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `1.0.3, 1.1.2, 2.0.2, 1.2.1` — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
❓ What is the problem
**A vulnerability** (CWE-384) exists in ipsilon.
📍 Affected scope
ipsilon — .
🔥 Severity
Severity: Critical (CVSS 9.1/10). Confidential information can be exposed externally
🔧 How to fix
Update to **1.0.3, 1.1.2, 2.0.2, 1.2.1**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'ipsilon' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'ipsilon' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で `ipsilon` を grep し、稼働しているサービス・バージョンを把握する。
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6Apply patch patch
Upgrade ipsilon to 1.0.3, 1.1.2, 2.0.2, 1.2.1ステージング環境で 1.0.3, 1.1.2, 2.0.2, 1.2.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスと、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番では Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
PyPI
ipsilon
[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.3"},{"introduced":"1.1.0"},{"fixed":"1.1.2"},{"introduced":"2.0.0"},{"fixed":"2.0.2"},{"introduced":"1.2.0"},{"fixed":"1.2.1"}]}]
References
- advisory https://nvd.nist.gov/vuln/detail/CVE-2016-8638
- advisory https://github.com/advisories/GHSA-376m-3rm2-9jm6
- package https://github.com/ipsilon-project/ipsilon
- package https://pypi.org/project/ipsilon
- web http://rhn.redhat.com/errata/RHSA-2016-2809.html
- web http://www.securityfocus.com/bid/94439
- web https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8638
- web https://ipsilon-project.org/advisory/CVE-2016-8638.txt
- web https://ipsilon-project.org/release/2.1.0.html
- web https://pagure.io/ipsilon/c/511fa8b7001c2f9a42301aa1d4b85aaf170a461c
- web https://github.com/ipsilon-project/ipsilon/commit/1c48414877fc110652b6078a29529972c7ec9122
- web https://github.com/ipsilon-project/ipsilon/commit/64fc366c054fc6af1d9d2692902db169884b5f78
- web https://github.com/ipsilon-project/ipsilon/commit/a33303b6beb5c316d7c18b23566b7666a4e307a4
- web https://github.com/ipsilon-project/ipsilon/commit/b4744a92d4fa7f6d7ade0ae2d99a2dc0ea94734d
- web https://access.redhat.com/errata/RHSA-2016:2809
- web https://access.redhat.com/security/cve/CVE-2016-8638
- web https://bugzilla.redhat.com/show_bug.cgi?id=1392829